by Pigeon Patrol | Feb 15, 2023 | Bird Spike, Pigeon Predators, Pigeon Spikes, Pigeons, Pigeons in the News, Raccoons, Sparrows
Researchers led by members of Oxford University’s Department of Biology have found rare colonies of the wild ancestors of common domestic and feral pigeons.
Already extinct in England and Wales, the wild Rock Dove (Columba livia) has been found on secluded Scottish and Irish islands, providing insights into how the domestic pigeon came to be.
“Feral” pigeons originate from escaped domestic birds and can be seen in towns and cities all over the world. These domestic pigeons are descended from wild Rock Doves, who nest in sea caves and mountainous areas.
Despite the success of feral pigeons, the Rock Dove has been declining throughout its global range—which once encompassed vast areas of Africa, Asia and Europe. University of Oxford DPhil student and lead author Will Smith says that “studying the decline of the Rock Dove has been challenging for researchers because of such extensive interbreeding and replacement with feral pigeons.”
Rock Doves now persist in only small, relict populations where feral pigeons have not yet been able to colonize. In fact, due to the interbreeding of feral pigeons and Rock Doves, and their resulting hybrids, many ornithologists believe that there are no truly wild Rock Doves left. However, there are potential colonies in certain places, including, in Europe, the Faroe Islands, parts of the Mediterranean and parts of Scotland and Ireland.
The researchers studied populations of birds thought to be Rock Doves in Scotland and Ireland by analyzing DNA to determine whether the birds were truly wild, and to estimate how much genetic influence from feral pigeons different wild populations had experienced.
Through a combination of expeditions and collaboration with British Trust for Ornithology bird ringers, the research team caught both feral pigeons and putative Rock Doves in places like North Uist (Uibhist a Tuath) in the Outer Hebrides, Orkney, and Cape Clear Island.
The team took feather samples from the birds for DNA analysis. By sequencing the pigeons’ DNA, they were able to show the differences between feral pigeons and Rock Doves, and also measure the degree of interbreeding between the two forms of the species.
The results confirmed that the Rock Doves of the UK and Ireland descended from the undomesticated lineage from which all feral and domestic pigeons originate, with varying degrees of interbreeding. Rock Doves in Orkney have experienced extensive interbreeding with feral pigeons and are at risk of getting hybridized to the point of their extinction as a distinct lineage. In contrast, Rock Doves in the Outer Hebrides remain almost free of feral pigeon influence.
“We identified feral pigeon ancestry in most of the Scottish and Irish Rock Dove populations we sampled, and there have been feral pigeons in Europe for hundreds of years. It was therefore really surprising to discover that the Outer Hebridean Rock Doves showed negligible signs of hybridization,” explained Will Smith.
However, feral pigeons have been reported on these islands with increasing frequency, so it might be that the distribution of wild Rock Doves in the UK continues to shrink as a result.
Recording their distribution and genetic status will help to monitor the remaining Rock Dove populations, and encourage efforts to understand potential relict populations elsewhere.
In the wider context of conservation, increasing understanding of “extinction by hybridization” will help efforts to prevent many other plants and animals, such as the Scottish wildcat, from undergoing the same fate as the Rock Dove.
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Pigeon Patrol Products & Services is the leading manufacturer and distributor or bird deterrent (control) products in Canada. Pigeon Patrol products have solved pest bird problems in industrial, commercial, and residential settings since 2000, by using safe and humane bird
deterrents with only bird and animal friendly solutions. At Pigeon Patrol, we manufacture and offer a variety of bird deterrents, ranging from Ultra-flex Bird Spikes with UV protection, Bird Netting, 4-S Bird Gel and the best Ultrasonic and audible sound devices on the market today.
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Contact us at 1 877-4-NO-BIRD,(604) 585-9279 or visit our website at www.pigeonpatrol.ca
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by Pigeon Patrol | Feb 15, 2023 | Bird Spike, Pigeon Patrol's Services, Pigeon Predators, Pigeon Spikes, Pigeons, Pigeons in the News
A September expedition to Papua New Guinea confirmed via video the existence of the black-naped pheasant pigeon, a critically endangered species that has not been reported for 140 years.
“For much of the trip, it seemed like we had no chance of finding this bird,” said Jordan Boersma, co-leader of the expedition and a postdoctoral researcher at the Cornell Lab of Ornithology. “We were just two days away from the end of our time on Fergusson Island in Papua New Guinea when one of our remote cameras recorded the bird walking around and fanning its tail.”
The group captured the first-ever video and still photos of the bird, a large ground-dwelling species with a rust-colored back, a black head and body, and a bobbing pheasant-like tail. It may only exist far inland on Fergusson Island in hot, extremely rugged geothermal terrain laced with twisty rivers and dense with biting insects and leeches.
“After a month of searching, seeing those first photos of the pheasant pigeon felt like finding a unicorn,” said John C. Mittermeier, director of the Search for Lost Birds project at American Bird Conservancy and a core member of the expedition team. “It’s the kind of moment you dream about your entire life as a conservationist and birdwatcher.”
Almost nothing is known of the black-naped pheasant pigeon apart from two specimens collected in 1882. There are no recordings of its sounds. The researchers think it would likely sound similar to a different pheasant pigeon species on mainland Papua New Guinea—a sound locals compare to the despairing cry of a woman ostracized by her community.
Tapping into Indigenous knowledge was key to the expedition’s success. Doka Nason, a local bird expert, joined the search and advised the team on where to look. Nason set up the camera that eventually recorded the bird. “When I saw the photos, I was incredibly excited,” he said. “I was jumping around yelling, ‘We did it!'”
“It was an experience of a lifetime working with Fergusson Islanders to find the pheasant pigeon and giving talks at schools and villages about our search was a highlight,” said Jason Gregg, a co-leader of the expedition. “Kids were whispering the local name of the bird—Auwo—and everyone was talking about it. I’m so happy we know this species survives, and it opens opportunities to learn even more about the bird and its incredible home.”
But conservationists are concerned. The principal landowner where the bird was found told the search team he’d just signed a deal with a logging company—a move that could threaten the black-naped pheasant pigeon and its habitat. The team is pursuing funding so they can go back to Fergusson and try to find out how many of the species are left.
“The reason I care, why I think we should all care, is that this bird has meant something and continues to mean something to the local people,” Boersma said. “It’s part of their legends and culture. If we lose this species, then its cultural importance will be lost along with the role it plays in this fantastic ecosystem.”
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Pigeon Patrol Products & Services is the leading manufacturer and distributor or bird deterrent (control) products in Canada. Pigeon Patrol products have solved pest bird problems in industrial, commercial, and residential settings since 2000, by using safe and humane bird
deterrents with only bird and animal friendly solutions. At Pigeon Patrol, we manufacture and offer a variety of bird deterrents, ranging from Ultra-flex Bird Spikes with UV protection, Bird Netting, 4-S Bird Gel and the best Ultrasonic and audible sound devices on the market today.
Voted Best Canadian wholesaler for Bird Deterrent products ten years in a row.
Contact us at 1 877-4-NO-BIRD,(604) 585-9279 or visit our website at www.pigeonpatrol.ca
Pigeon/Pigeon Patrol / Pigeons Roosing / Vancouver Pigeon Control / Bird Spikes / Bird Control / Bird Deterrent / PIgeon Deterrent / Surrey Pigeon Control / Pest / Seagull deterrent / Vancouver Pigeon Blog / Birds Inside Home / Pigeons in the cities / Ice Pigeons / What to do about pigeons / sparrows, Damage by Sparrows, How to Keep Raccoons Away, Why Are Raccoons Considered Pests / De-fence / Pigeon Nesting / Bird Droppings / Pigeon Dropping / woodpecker control / Professional Bird Control Company / Keep The Birds Away / Birds/rats/seagull/pigeon/woodpecker/dove/sparrow/pidgeon control/pidgeon problem/pidgeon control/flying rats/pigeon problems/ bird netting/bird gel/bird spray/bird nails/bird guard
by Pigeon Patrol | Feb 6, 2023 | Bird Spike, Pigeon Droppings, Pigeon Patrol's Services, Pigeon Predators, Pigeon Spikes, Pigeons
Homing pigeons may share the human capacity to build on the knowledge of others, improving their navigational efficiency over time, a new Oxford University study has found.
The ability to gather, pass on and improve on knowledge over generations is known as cumulative culture. Until now humans and, arguably some other primates, were the only species thought to be capable of it.
Takao Sasaki and Dora Biro, Research Associates in the Department of Zoology at Oxford University, conducted a study testing whether homing pigeons can gradually improve their flight paths, over time. They removed and replaced individuals in pairs of birds that were given a specific navigational task. Ten chains of birds were released from the same site and generational succession was simulated with the continuous replacement of birds familiar with the route with inexperienced birds who had never flown the course before. The idea was that these individuals could then pass their experience of the route down to the next pair generation, and also enable the collective intelligence of the group to continuously improve the route’s efficiency.
The findings, published in Nature Communications, suggest that over time, the student does indeed become the teacher. The pairs’ homing performance improved consistently over generations — they streamlined their route to be more direct. Later generation groups eventually outperformed individuals that flew solo or in groups that never changed membership. Homing routes were also found to be more similar in consecutive generations of the same chain of pigeon pairs than across them, showing cross-generational knowledge transfer, or a “culture” of homing routes.
Takao Sasaki, co-author and Research Fellow in the Department of Zoology said: ‘At one stage scientists thought that only humans had the cognitive capacity to accumulate knowledge as a society. Our study shows that pigeons share these abilities with humans, at least to the extent that they are capable of improving on a behavioural solution progressively over time. Nonetheless, we do not claim that they achieve this through the same processes.’
When people share and pass knowledge down through generations, our culture tends to become more complex over time, There are many good examples of this from manufacturing and engineering. By contrast, when the process occurs between homing pigeons, the end result is an increase in the efficiency, (in this case navigational), but not necessarily the complexity, of the behaviour.
Takao Sasaki added: ‘Although they have different processes, our findings demonstrate that pigeons can accumulate knowledge and progressively improve their performance, satisfying the criteria for cumulative culture. Our results further suggest that cumulative culture does not require sophisticated cognitive abilities as previously thought.’
This study shows that collective intelligence, which typically focuses on one-time performance, can emerge from accumulation of knowledge over time.
Dora Biro, co-author and Associate Professor of Animal Behaviour concludes: ‘One key novelty, we think, is that the gradual improvement we see is not due to new ‘ideas’ about how to improve the route being introduced by individual birds. Instead, the necessary innovations in each generation come from a form of collective intelligence that arises through pairs of birds having to solve the problem together — in other words through ‘two heads being better than one’.’
Moving forward, the team intend to build on the study by investigating if a similar style of knowledge sharing and accumulation occurs in other multi-generational species’ social groups. Many animal groups have to solve the same problems repeatedly in the natural world, and if they use feedback from past outcomes of these tasks or events, this has the potential to influence, and potentially improve, the decisions the groups make in the future.
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Pigeon Patrol Products & Services is the leading manufacturer and distributor or bird deterrent (control) products in Canada. Pigeon Patrol products have solved pest bird problems in industrial, commercial, and residential settings since 2000, by using safe and humane bird
deterrents with only bird and animal friendly solutions. At Pigeon Patrol, we manufacture and offer a variety of bird deterrents, ranging from Ultra-flex Bird Spikes with UV protection, Bird Netting, 4-S Bird Gel and the best Ultrasonic and audible sound devices on the market today.
Voted Best Canadian wholesaler for Bird Deterrent products ten years in a row.
Contact us at 1 877-4-NO-BIRD,(604) 585-9279 or visit our website at www.pigeonpatrol.ca
Pigeon/Pigeon Patrol / Pigeons Roosing / Vancouver Pigeon Control / Bird Spikes / Bird Control / Bird Deterrent / PIgeon Deterrent / Surrey Pigeon Control / Pest / Seagull deterrent / Vancouver Pigeon Blog / Birds Inside Home / Pigeons in the cities / Ice Pigeons / What to do about pigeons / sparrows, Damage by Sparrows, How to Keep Raccoons Away, Why Are Raccoons Considered Pests / De-fence / Pigeon Nesting / Bird Droppings / Pigeon Dropping / woodpecker control / Professional Bird Control Company / Keep The Birds Away / Birds/rats/seagull/pigeon/woodpecker/dove/sparrow/pidgeon control/pidgeon problem/pidgeon control/flying rats/pigeon problems/ bird netting/bird gel/bird spray/bird nails/bird guard
by Pigeon Patrol | Feb 6, 2023 | Bird Spike, Pigeons, Pigeons in the News, Raccoons, Sparrows, UltraSonic Bird Control
Many animals will sound an alarm to alert other members of their group of impending danger. Now, researchers reporting in Current Biology on November 9 have shown that crested pigeons do this in a surprisingly non-vocal way. One of their main flight feathers produces a critical high-pitched sound as the birds fly away. As they flap faster to escape a predator, that alarm signal automatically increases in tempo.
Importantly, the researchers also show that other crested pigeons flee when they hear that sound. The findings confirm that the sound is a bona fide signal, not just a side effect of flight.
“Crested pigeons signal danger with noisy wings, not voices,” says Trevor Murray of The Australian National University. “It shows that birds really can use their feathers as ‘musical instruments’ to communicate with others.”
Charles Darwin proposed the idea of non-vocal “instruments” in birds about 150 years ago, but it has been a difficult idea to test. Scientists had long known that crested pigeons make loud sounds when they fly. For that reason, they are sometimes called “whistle-winged pigeons.” The Australian National University lab led by Robert Magrath earlier found that other pigeons pay attention to those sounds.
To confirm that the whistling feathers were indeed an alarm signal, in this new study, the researchers shot high-speed video and conducted feather-removal experiments. These studies show that the birds’ unusually narrow eighth primary wing feather produces a distinct note with each downstroke. The sound also changes as birds flap faster, such that those fleeing danger produce wing sounds with a higher tempo.
In fact, the birds’ wings produce alternating high and low notes in flight. The researchers’ experiments showed that the eighth primary wing feather is responsible for the high notes. The low notes come from the ninth primary feather. But, playback experiments showed, only the high notes are critical for sounding an alarm.
When the researchers played flight sounds to other pigeons, individuals were much more likely to flee upon hearing the flight of a bird with an intact eighth primary feather. When they played the sound of a pigeon with that eighth feather removed, they often just looked around instead of taking off.
“We show that the crested pigeon produces an acoustic alarm signal with its wings and that it is an intrinsically reliable signal of danger,” Murray says. “The alarm signal is intrinsically reliable because pigeons flap faster to escape predators, and this fast flapping automatically produces the high-tempo alarm signal.”
Crested pigeons are not the only birds known to produce unusually loud sounds with their wings, the researchers note. Pigeons in general fly noisily. Hummingbirds and manikins are also well known for their wing sounds. They hope that future studies will explore the evolution of wing sounds in other bird species.
“Birds have such prominent voices, we have largely ignored their surprisingly complex instrumental sounds,” Magrath says.
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Pigeon Patrol Products & Services is the leading manufacturer and distributor or bird deterrent (control) products in Canada. Pigeon Patrol products have solved pest bird problems in industrial, commercial, and residential settings since 2000, by using safe and humane bird
deterrents with only bird and animal friendly solutions. At Pigeon Patrol, we manufacture and offer a variety of bird deterrents, ranging from Ultra-flex Bird Spikes with UV protection, Bird Netting, 4-S Bird Gel and the best Ultrasonic and audible sound devices on the market today.
Voted Best Canadian wholesaler for Bird Deterrent products ten years in a row.
Contact us at 1 877-4-NO-BIRD,(604) 585-9279 or visit our website at www.pigeonpatrol.ca
Pigeon/Pigeon Patrol / Pigeons Roosing / Vancouver Pigeon Control / Bird Spikes / Bird Control / Bird Deterrent / PIgeon Deterrent / Surrey Pigeon Control / Pest / Seagull deterrent / Vancouver Pigeon Blog / Birds Inside Home / Pigeons in the cities / Ice Pigeons / What to do about pigeons / sparrows, Damage by Sparrows, How to Keep Raccoons Away, Why Are Raccoons Considered Pests / De-fence / Pigeon Nesting / Bird Droppings / Pigeon Dropping / woodpecker control / Professional Bird Control Company / Keep The Birds Away / Birds/rats/seagull/pigeon/woodpecker/dove/sparrow/pidgeon control/pidgeon problem/pidgeon control/flying rats/pigeon problems/ bird netting/bird gel/bird spray/bird nails/bird guard
by Pigeon Patrol | Jan 30, 2023 | Bird Spike, Pigeon Predators, Pigeon Spikes, Pigeons, Pigeons in the News, Raccoons
For 53 years, large flocks of pigeons have called the Sid Buckwold Bridge home.
And for 53 years, they’ve also used it as a washroom.
The City of Saskatoon is embarking on a dirty mission to rid the bridge of 348 metric tonnes of pigeon poop over the next several months.
Angela Gardiner, the city’s general manager of transportation and construction, told Saskatchewan Afternoon that the collective weight of the droppings is equivalent to 232 mid-sized vehicles being parked on the bridge at all times.
She said the pigeons have been holing up inside utility cavities in the bridge and those provide a cozier home than other crossings in Saskatoon.
“Once we actually got in there over the last couple of years … the extent of the pigeon droppings was quite a bit more than we had anticipated,” Gardiner said.
She emphasized there hasn’t been any structural damage to the Sid Buckwold Bridge from the pigeon poop, but if it were left to stay, it could start wearing it out.
The pigeon droppings contain uric acid, which has the potential to eat away at the concrete used to build the crossing.
“There is a potential with any dead load like this that it could impact the structural integrity,” she said.
Specialized crews have been hired by the city to remove the droppings at the same time as rehabilitation work is done on the overall structure of the bridge.
In addition to the bridge cleanup, workers will install barriers to make it harder for birds to nest on the structure in the future.
However, the pigeons that have been displaced from the bridge will keep coming back — so Gardiner said the city plans to euthanize all 1,500 of them “humanely.”
“Part of the problem with pigeons is they’re homing birds, so if you just relocate them elsewhere, they’ll come back very quickly,” Gardiner said.
“If we fenced it off or prevented them from getting back there, they’ll just find a nearby location. I don’t think anyone wants 1,500 pigeons on their property.”
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Pigeon Patrol Products & Services is the leading manufacturer and distributor or bird deterrent (control) products in Canada. Pigeon Patrol products have solved pest bird problems in industrial, commercial, and residential settings since 2000, by using safe and humane bird deterrents with only bird and animal friendly solutions. At Pigeon Patrol, we manufacture and offer a variety of bird deterrents, ranging from Ultra-flex Bird Spikes with UV protection, Bird Netting, 4-S Bird Gel and the best Ultrasonic and audible sound devices on the market today.
Voted Best Canadian wholesaler for Bird Deterrent products ten years in a row.
Contact us at 1 877-4-NO-BIRD,(604) 585-9279 or visit our website at www.pigeonpatrol.ca
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by Pigeon Patrol | Jan 30, 2023 | Bird Spike, Pigeon Predators, Pigeon Spikes, Pigeons, Pigeons in the News, Raccoons, Sparrows, UltraSonic Bird Control
Two patients have died at a hospital after contracting a fungal infection linked to pigeon droppings.
The individuals are thought have caught the airborne disease at the Queen Elizabeth University hospital in Glasgow after inhaling the fungus cryptococcus, typically found in soil and pigeon droppings.
NHS Greater Glasgow and Clyde (NHSGGC), which runs the hospital, has launched an investigation into the outbreak. It said the likely source of the pigeon droppings was a non-public room, thought to contain machinery, which has now been cleaned.
NHSGGC said “control measures” had been introduced, which is understood to mean equipment to filter the air in some parts of the hospital, and that some patients, including children, who may be vulnerable to the disease have received medication, which was proving effective.
The health board said that the second patient who died was elderly and the death was due to an unrelated matter. It said it could not share further details of the case because of patient confidentiality.
Teresa Inkster, NHSGGC lead consultant for infection control, said: “Cryptococcus lives in the environment throughout the world. It rarely causes infection in humans. People can become infected with it after breathing in the microscopic fungi, although most people who are exposed to it never get sick from it.”
She said there had been no further cases since control measures were put in place. “We are continuing to monitor the air quality and these results are being analysed. It remains our priority to ensure a safe environment for patients and staff,” she added.
Portable air filters have been installed to help reassure “vulnerable patients”, NHSGGC said, adding that the organism is “harmless to the vast majority of people and rarely causes disease in humans”. A group of hospital patients are being moved within the hospital “due to their clinical diagnosis and ongoing treatment”.
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Pigeon Patrol Products & Services is the leading manufacturer and distributor or bird deterrent (control) products in Canada. Pigeon Patrol products have solved pest bird problems in industrial, commercial, and residential settings since 2000, by using safe and humane bird deterrents with only bird and animal friendly solutions. At Pigeon Patrol, we manufacture and offer a variety of bird deterrents, ranging from Ultra-flex Bird Spikes with UV protection, Bird Netting, 4-S Bird Gel and the best Ultrasonic and audible sound devices on the market today.
Voted Best Canadian wholesaler for Bird Deterrent products ten years in a row.
Contact us at 1 877-4-NO-BIRD,(604) 585-9279 or visit our website at www.pigeonpatrol.ca
Pigeon/Pigeon Patrol / Pigeons Roosing / Vancouver Pigeon Control / Bird Spikes / Bird Control / Bird Deterrent / PIgeon Deterrent / Surrey Pigeon Control / Pest / Seagull deterrent / Vancouver Pigeon Blog / Birds Inside Home / Pigeons in the cities / Ice Pigeons / What to do about pigeons / sparrows, Damage by Sparrows, How to Keep Raccoons Away, Why Are Raccoons Considered Pests / De-fence / Pigeon Nesting / Bird Droppings / Pigeon Dropping / woodpecker control / Professional Bird Control Company / Keep The Birds Away / Birds/rats/seagull/pigeon/woodpecker/dove/sparrow/pidgeon control/pidgeon problem/pidgeon control/flying rats/pigeon problems/ bird netting/bird gel/bird spray/bird nails/bird guard
